The crystal and molecular structure of ·(ClO4)2 has been determine d by X-ray crystallography. It crystallizes in the monoclinic, space group P21/ c, with lattice parameters a=0.63270(9)nm, b=2.4264(2)nm, c=1.2128(1)nm, β=92.7 21(9)°, V=1.8597(3)nm3, Z=4, Dc=1.835Mg·m-3, F(000)=1032, μ=1.591mm-1. The molecule is built up of centro-symmetric dimeric entities, in which the four-m embered Ag2S2 ring is planar and the angle of S(3)-Ag(1)-S(3A) is 107.70(2)°f or symmetry requirements. The silver atoms have slightly distorted tetrahedral c oordination environment, and the sulfur atoms of the ETU group occupy four coord ination sites. The two percholate anions in general position balance the charge. In the solid state, the title compound forms three dimensional network structur es through hydrogen bonds. The intermolecular hydrogen bonds and extensive inter molecular interaction connect the 2+ion and two ClO4-anions to cont ribute to the stability of the structure. CCDC: 208731.
RAJ S.Shanmuga Sundara FUN Hoong Kun (X ray Crystallography Unit, School of Physics, Universiti Sains Malaysia 11800 USM, Penang, Malaysia) The complex [Co(Im)6](Cin)2 (Im=imidazole,Cin=cinnamate) was prepared by reaction of Co(PhCHCHCOO)2 with imidazole in ethanol. It has been determined by single crystal X ray analyses. The crystals are triclinic, space group , with a=9.7601(3),b=10.5935(3),c=11.3269(2)? ,α =69.948(1),β =71.027(1),γ =62.803(1)° , and Z=1. The crystal structure of the title complex consists of monomeric [Co(Im)6]2＋ cations and cinnamate anions in which the cobalt? ion assumes a centrosymmetric octahedral geometry with the CoN6 chromophore. In the solid state, the complex forms a three dimensional network through N－ H… O hydrogen bonds, the intermolecular hydrogen bonds connect the [Co(Im)6]2＋ cations and cinnamate anions.The cinnamate anions are nearly planar.
